app: optional pillar-driven venv/supervisor config names
many: sensible defaults for app_name pillar var
fixup! fe19a2ef1bb9cf051a636c5c37c80bc647c194d8
fixup! d9825346176bb199d56f84cd70ecbe06789be0c1
many: sensible defaults for app_user pillar var
app: configurable app_directory via pillar